Storage-battery plate



Patented May 8, 1928.

UNITED ,STA

TES PATENT. OFFICE.

JOHN H. CAIIBECK, OI J'OPLIN, AND JOHN SCHAEFFEB, OF ST. LOUISL, MISSOURI, ASSIGNORS TO THE EAGLE-PICHER LEAD COMPANY','OF CINCINNATI, OHIO, A 003- IBOBATION OHIO.

No Drawing.

Our invention relates to the manufacture of storage battery plates and has for its object to provide a plate of relatively high 'ca-' pacity and generally good characteristics.

Our invention is based on our discoverythat the fumedbasic lead sulphate invented I by John A. Scbaefie'r John H.- Qalbeck and Bernard S. White and forming the subjectv matter of their Patent No. 1,524,31o, dated Jan. 27, 1925, when used alone or wlth 11tharge or red lead, or both, in the dry form and applied to store ebattery grids, solution being subsequently a ded, or when used either alone or in admixture with litharge or red lead, or both, made into a paste with suitable vehicles-and applied to storage battery grids and treated in suitable ways in process, has notable advantages over mixtures or pastes heretofore used. Among others, that the 3 phur dioxide gas and regulating the sulphur .by freedom from uncombined lead oxide.-

It is made by spraying a pure lead in a state i of fine division into a heated furnace having.

an atmosphere containing oxygen and suldioxide so as to produce a fumed basic lead sulphate with the desired lead sulphate component.

\Ve use this fumed basic lead sulphate alone orwithlithargeor red lead, or both, in the dry form and applied. to storagebatgrlds in general we claim asnew and desire STORAGE-BATTERY rm'ra.

Application fled July 26, 1924. Serial Rog 728,868.

tery grids, solution being subsequently added, 7

or use this fumed basic lead sulphate alone or mixed with lltharge or red:lead, or both made into a paste with suitable vehicles an applied to storage battery grids to obtain a I battery material which is more suitable as compared with battery materials now generally used and applied to storage battery practice, and subject the plates to a development treatment of a suitale character.

The process by which the fumed basiclead sulphate is made is such as to make possible the presence in the product of high ercentages of combined lead oxide and f?) in the pasting of the-plate grids such fumed basic lead sulphate, highin combined lead oxide and free from uncombined lead oxide.

. Having now described our invention, what ters Ratent, is: v. y

1. A storage battery plate of high capacity, long life and high porosity'in which the formed paste comprises substantial amounts of fumed basic lead sulphate and of the-de'- r cer-- tam purposs we find it advantageous to usetosecure by Letrivatives of such fumedbasic lead sulphate formed inthe development of the plate.

2. A storage battery plate 0 high' capacity, long life and highporosityfin which the formed paste, comprises, substantial amounts i of, substantiall pure fumed basic lead sulphate and of t e derivatives of such fumed basic lead sul hate formed in the development of the p ate. a

JOHN H. GALBECK.

JOHN A..SCHAEFFER. 

